Working with Time Series Data |
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The EXPAND Procedure and Data Transformations
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The EXPAND procedure provides a convenient way to transform series. For example, the following statements add variables for the logarithm of AIR and the logistic of SHARE to data set A:
proc expand data=a out=a method=none;
convert air=logair / transform=( log );
convert share=lshare / transform=( / 100 logit );
run;
See Table 14.1 in
Chapter 14,
The EXPAND Procedure,
for a complete list of transformations supported by PROC EXPAND.
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